Periodic orbits and gravitational wave radiation in short hair black hole spacetimes for an extreme mass ratio system
Abstract For a short hair black hole(BH) that bypasses the “no-short-hair” theorem, its hair parameters have a significant impact near the event horizon and may thus carry the internal information of the BH. This paper studies the influence of the hair parameter $$Q_m$$ Q m and the structural parame...
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| Language: | English |
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SpringerOpen
2025-01-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-025-13767-0 |
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| author | Lai Zhao Meirong Tang Zhaoyi Xu |
| author_facet | Lai Zhao Meirong Tang Zhaoyi Xu |
| author_sort | Lai Zhao |
| collection | DOAJ |
| description | Abstract For a short hair black hole(BH) that bypasses the “no-short-hair” theorem, its hair parameters have a significant impact near the event horizon and may thus carry the internal information of the BH. This paper studies the influence of the hair parameter $$Q_m$$ Q m and the structural parameter $$k$$ k of the short hair BH on the periodic orbits of particles and gravitational wave radiation in the extreme mass ratio(EMR) system. The research results show that $$Q_m$$ Q m has a significant impact on the radius of the orbit, angular momentum, and the $$E-L$$ E - L space. A larger value of $$k$$ k weakens this effect and makes it degenerate with the Schwarzschild BH. In addition, an increase in $$Q_m$$ Q m or a decrease in $$k$$ k will lead to a reduction in the period of gravitational waves and a significant enhancement of the signal amplitude. These results provide new observational means for distinguishing short hair BH from classical BH and also offer new insights for verifying the no-hair theorem and understanding the physical behaviors near the event horizon. |
| format | Article |
| id | doaj-art-9764dc37038a40b785533d13cb7fc228 |
| institution | Kabale University |
| issn | 1434-6052 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj-art-9764dc37038a40b785533d13cb7fc2282025-01-26T12:49:44ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522025-01-0185111710.1140/epjc/s10052-025-13767-0Periodic orbits and gravitational wave radiation in short hair black hole spacetimes for an extreme mass ratio systemLai Zhao0Meirong Tang1Zhaoyi Xu2College of Physics, Guizhou UniversityCollege of Physics, Guizhou UniversityCollege of Physics, Guizhou UniversityAbstract For a short hair black hole(BH) that bypasses the “no-short-hair” theorem, its hair parameters have a significant impact near the event horizon and may thus carry the internal information of the BH. This paper studies the influence of the hair parameter $$Q_m$$ Q m and the structural parameter $$k$$ k of the short hair BH on the periodic orbits of particles and gravitational wave radiation in the extreme mass ratio(EMR) system. The research results show that $$Q_m$$ Q m has a significant impact on the radius of the orbit, angular momentum, and the $$E-L$$ E - L space. A larger value of $$k$$ k weakens this effect and makes it degenerate with the Schwarzschild BH. In addition, an increase in $$Q_m$$ Q m or a decrease in $$k$$ k will lead to a reduction in the period of gravitational waves and a significant enhancement of the signal amplitude. These results provide new observational means for distinguishing short hair BH from classical BH and also offer new insights for verifying the no-hair theorem and understanding the physical behaviors near the event horizon.https://doi.org/10.1140/epjc/s10052-025-13767-0 |
| spellingShingle | Lai Zhao Meirong Tang Zhaoyi Xu Periodic orbits and gravitational wave radiation in short hair black hole spacetimes for an extreme mass ratio system European Physical Journal C: Particles and Fields |
| title | Periodic orbits and gravitational wave radiation in short hair black hole spacetimes for an extreme mass ratio system |
| title_full | Periodic orbits and gravitational wave radiation in short hair black hole spacetimes for an extreme mass ratio system |
| title_fullStr | Periodic orbits and gravitational wave radiation in short hair black hole spacetimes for an extreme mass ratio system |
| title_full_unstemmed | Periodic orbits and gravitational wave radiation in short hair black hole spacetimes for an extreme mass ratio system |
| title_short | Periodic orbits and gravitational wave radiation in short hair black hole spacetimes for an extreme mass ratio system |
| title_sort | periodic orbits and gravitational wave radiation in short hair black hole spacetimes for an extreme mass ratio system |
| url | https://doi.org/10.1140/epjc/s10052-025-13767-0 |
| work_keys_str_mv | AT laizhao periodicorbitsandgravitationalwaveradiationinshorthairblackholespacetimesforanextrememassratiosystem AT meirongtang periodicorbitsandgravitationalwaveradiationinshorthairblackholespacetimesforanextrememassratiosystem AT zhaoyixu periodicorbitsandgravitationalwaveradiationinshorthairblackholespacetimesforanextrememassratiosystem |